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Abstract Title:

Anticonvulsant effect of cannabidiol in the pentylenetetrazole model: Pharmacological mechanisms, electroencephalographic profile, and brain cytokine levels.

Abstract Source:

Epilepsy Behav. 2017 Aug 15 ;75:29-35. Epub 2017 Aug 15. PMID: 28821005

Abstract Author(s):

Luciano R Vilela, Isabel V Lima, Érica B Kunsch, Hyorrana Priscila P Pinto, Aline S de Miranda, Érica Leandro M Vieira, Antônio Carlos P de Oliveira, Marcio Flávio D Moraes, Antônio L Teixeira, Fabricio A Moreira

Article Affiliation:

Luciano R Vilela

Abstract:

Cannabidiol (CBD), the main nonpsychotomimetic compound from Cannabis sativa, inhibits experimental seizures in animal models and alleviates certain types of intractable epilepsies in patients. Its pharmacological profile, however, is still uncertain. Here we tested the hypothesis that CBD anticonvulsant mechanisms are prevented by cannabinoid (CB1 and CB2) and vanilloid (TRPV1) receptor blockers. We also investigated its effects on electroencephalographic (EEG) activity and hippocampal cytokines in the pentylenetetrazole (PTZ) model. Pretreatment with CBD (60mg/kg) attenuated seizures induced by intraperitoneal, subcutaneous, and intravenous PTZ administration in mice. The effects were reversed by CB1, CB2, and TRPV1 selective antagonists (AM251, AM630, and SB366791, respectively). Additionally, CBD delayed seizure sensitization resulting from repeated PTZ administration (kindling). This cannabinoid also prevented PTZ-induced EEG activity and interleukin-6 increase in prefrontal cortex. In conclusion, the robust anticonvulsant effects of CBD may result from multiple pharmacological mechanisms, including facilitation of endocannabinoid signaling and TRPV1 mechanisms. These findings advance our understanding on CBD inhibition of seizures, EEG activity, and cytokine actions, with potential implications for the development of new treatments for certain epileptic syndromes.

Study Type : Animal Study

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Sayer Ji
Founder of GreenMedInfo.com

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